caa a22 4500 44588066X CHVBK 20180317145542.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0589-0 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0589-0 New method for preparation of polyoxometalate-capped gold nanoparticles, and their assembly on an indium-doped tin oxide electrode [Elektronische Daten] [Yu Cheng, Junwei Zheng, Zhenping Wang, Liu Liu, Ying Wu, Jianping Yang] Functionalized gold nanoparticles capped with polyoxometalates were prepared by a simple photoreduction technique where phosphododecamolybdates serve as reducing reagents, photocatalysts, and as stabilizers. TEM images of the resulting gold nanoparticles show the particles to have a relative narrow size distribution. Monolayer and multilayer structures of the negatively charged capped gold nanoparticles were deposited on a poly(vinyl pyridine)-derivatized indium-doped tin oxide (ITO) electrode via the layer-by-layer technique. The surface plasmon resonance band of the gold nanoparticles displays a blue shift on the surface of the ITO electrode. This is due to the substrate-induced charge redistribution in the gold nanoparticles and a change in the electromagnetic coupling between the assembled nanoparticles. The modified electrode exhibits the characteristic electrochemical behavior of surface-confined phosphododecamolybdate and excellent electrocatalytic activity. The catalysis of the modified electrode towards the model compound iodate was systematically studied. The heterogeneous catalytic rate constant for the electrochemical reduction of iodate was determined by chronoamperometry to be ca. 1.34 × 105mol−1·L·s−1. The amperometric method gave a linear range from 2.5 × 10−6 to 1.5 × 10−3M and a detection limit of 1.0 × 10−6M. We believe that the functionalized gold nanoparticles prepared by this photoreduction technique are advantageous in terms of fabrication of sensitive and stable redox electrodes. Figa Functionalized gold nanoparticles (Au-NPs) capped with polyoxometalates were prepared by a simple photoreduction technique. The negatively charged capped Au-NPs were deposited on a poly(vinyl pyridine)-derivatized indium-doped tin oxide electrode via the layer-by-layer technique. The modified electrode exhibits the characteristic electrochemical behavior of surface-confined phosphododecamolybdate, and excellent catalytic activity. Springer-Verlag, 2011 Gold nanoparticles nationallicence Phosphododecamolybdate nationallicence Photoreduction technique nationallicence Modified electrode nationallicence Electrocatalytic reduction nationallicence Cheng Yu College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut Zheng Junwei College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut Wang Zhenping College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut Liu Liu College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut Wu Ying College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut Yang Jianping Department of Anesthesiology, First Affiliated Hospital of Soochow University, 215006, Suzhou, China aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 529-535 0026-3672 173:3-4<529 2011 173 604 https://doi.org/10.1007/s00604-011-0589-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0589-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cheng Yu College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut NATIONALLICENCE 700 1- Zheng Junwei College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut NATIONALLICENCE 700 1- Wang Zhenping College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut NATIONALLICENCE 700 1- Liu Liu College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut NATIONALLICENCE 700 1- Wu Ying College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123, Suzhou, China aut NATIONALLICENCE 700 1- Yang Jianping Department of Anesthesiology, First Affiliated Hospital of Soochow University, 215006, Suzhou, China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 529-535 0026-3672 173:3-4<529 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer